Cisco vs Digium

Cisco Systems, Inc. is an American multinational technology company headquartered in San Jose, California, that designs, manufactures, and sells networking equipment. Cisco is the worldwide leader in networking for the Internet, and it supports, manages and operates business systems for various and major third parties. Cisco Systems was founded in December 1984 by Leonard Bosack, who was in charge of the Stanford University computer science (CS) department's computers, and Sandy Lerner, who managed the Graduate School of Business' computers.

Digium, Inc. is a privately held communications technology company based in Huntsville, Alabama. Digium specializes in developing and manufacturing communications hardware and telephony software, most notably the open-source telephony platform Asterisk. Digium was founded by Mark Spencer in 1999 as Linux Support Services, Asterisk was published as open source software, which gave others the freedom to use, change, and improve the software.